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(No Model.)

W. H. WOBTH EN. COMPRESSOR CYLINDER.

No. 317,068. Patiented- May 5, 188s.

N, PETERs Phummno n her. \Naahinglnn. D, C.

WILLIAM H. WORTEIEN,

P TENT OF ICE i or BROOKLYN, NEW YORK, ASSIGNQR TO GUILD &

GARRISON, OF'SAME PLACE.

COMPRESSOR-CYLINDER.

$PEGIEICATION forming part of Letters Patent No. 317,068, dated May 5, 1885. Application filed March 31, 1884. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM H. WORTHEN, of the city of Brooklyn, in the county of Kings 1 and State of New York, have invented a new 5 and useful Improvement in Compressor'Gylinders, of which the following is a specification. My invention is applicable to compressors for gas and air, but is particularly adapted to compressors for ammoniacal gas used in refrigerating apparatus and ice-machines.

In compressing air or gas a large amount, of heat is generated, and in order to keep the compressor-cylinder from becoming too highly heated it is customary to surround the cylinder by a water-jacket. This heat is liberated by the expansion of the compressed air or gas, and in compressors for ammoniacal gas it is common to have the passage or passages leading to the suction or inlet valves so cold that they will be covered with ice, while the passages into which the compressed gas is delivered from the cylinder are very hot.

Most of the compressors now in use in which the cylinder is arranged horizontally have the inlet and outlet valves in the cylinder heads, and in both air and gas compressors the compressed air or gas chests in the two' heads communicate with opposite ends of a passage extending lengthwise of the cylinder, and from which the delivery or discharge pipe extends. In gas-compressors the suctionchests in the two heads likewise communicate with opposite ends of a passage extending lengthwise of the cylinder, and to which the suction or supply pipe is connected.- When the compressor is in operation, the suction or supply passage will be very cold, while the discharge-passage will be very hot, and the unequal expansion produced by such great differences in temperature is liable to breakpassage will be cooled, while the suction-pas sage will be heated or moderated in temperature. l My invention consists in the combination of a cylinder and a surrounding jacket connect- 5 5 ed at their ends only, and the jacket comprising a novel arrangement or construction, particularl y hereinafter described, of a dischargepassage, through which compressed air or gas. is delivered, and heads containing discharge- 6c chests, which are in communication with the ends of the passage, whereby the said disch arge passage will be exposed to the modifying in--' fluence of the water in the jacket. In this 5 construction I prefer to have the water-inlet at the bottom of the jacket, and the water outlet or overflow at the top of the jacket and above the discharge-passage. When the cylinder has also a suction-passage communicating with suction-chests in the heads, as .in the case of a gas-compressor, the suction-passage will be constructed and arranged in a manner.

similar to that above described with reference to the discharge-passage, and its temperature will also be modified by the water in the j acket. 7 5

In the accompanying drawings, Figure l is a longitudinal section of a cylinder embodying my invention, one cylinder-head being shown in section, and the other in exterior view. Fig. 2 is a plan of said cylinder. Fig. 3 is a transverse vertical section thereof on the dotted line or m, Fig. 1; and Fig. 4 is an end view thereof, the head being removed.

Similar letters of reference designate. corresponding parts'in all the figures.

A designates the cylinder proper, which is surrounded by a jacket, A, formed integral with the cylinder by casting, but having no connection therewith except at the ends. On the jacket are cast flanges a, whereby the cylinder is supported.

B B designate the front and back cylinderheads, which are alike in having a suction chest, 12, and a discharge-chest, b. In the suction-chest bis the opening 0, into which the inlet-valve box is fitted,'and in the dischargechest is an opening, 0'. The opening 0 is controlled by a discharge or outlet valve. I have not shown any valves, astliey form no part of my present invention 5 but I prefer to use sucwe chests b in the cylinder-heads B B.

tion and discharge valves, such as are shown and described in my application for United States Letters Patent filed March 31, 1884., and of which the serial number is 126,247. The head B is formed with a long neck or socket, d, which constitutes the stuffing-box for the piston-rod. (Not here shown.)

The jacket A is made semicircular at the lower part, and its sides are extended upward considerably above the cylinder A. Its to'p may be open or may be closed by a removable cover, which need not be water-tight. The jacket A has a water-inlet, e, at the bottom, and at the top or near the top is a water-outlet or overflow, e.

f g designate two passages, which are formed integral with the cylinder and jacket by casting, and which extend lengthwise thereof. The passage f constitutes a suction or inlet passage, and its ends or mouths f are exposed at the front and back ends of the cylinder A, and communicate with the suction or supply At about the middle of the length of the passage f is an opening, f, to which the suction or supply pipe is to be secured. The passage 9 constitutes a discharge or outlet passage for compressed air or gas, and its ends or months 9 are-exposed at the ends of the cylinder, and communicate with the discharge-chests b in the two cylinder-heads B B. At about the middle of the length of the passage 9 is an opening or outlet, 9 to which may be connected the outlet or discharge pipe. The course of the air or gas through these passages f g is illustrated by the arrows in Fig. 2. Although the two passages are formed integral with the jacket and cylinder, they are separate from each other and from the cylinder throughout their length, and a body of water is always interposed between them and between each and the cylinder. The two passages f g are circuitous or curved in a horizontal plane; or, rather, the partitions *,which form the inner sides or walls of the passages, are thus curved, and hence provision is afforded for expansion, and they are less liable to break than they would beif extended straight from end to end of the cylinder-jacket.

Ordinarilya copious supply of water through the jacket is necessary for an air or gas compressor, in order to maintain a low temperature of the water in the jacket. In the present case a large part of the heat taken from the discharge-passage g is taken up by the suction passage f, to moderate the temperature thereof, and hence a less copious supply of water to the jacket is necessary.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The combination of the horizontal cylinder A and the surroundingjacket A, connected only at their ends, the jacket being prolonged upward on each side of and above the cylinder, and constructed with a dischargepassage, 5/, having its ends 9 presented at the ends of the jacket, and an outlet-opening, between the ends of the jacket, the said passage being isolated from the cylinder A, so as to allow water to flow between the cylinder and passage, and cylinder-heads having discharge-chests b, communicating with the ends of the passage 9, substantially as herein de scribed.

2. The combination of the horizontal cylinder A and the surrounding jacket A, connected only at their ends, the jacket being prolonged upward on each side of and above the cylinder, and constructed with discharge and suction passages g f, having their ends 9 f presented at the ends of the jacket, and outlet and inlet openings g f" between the ends of the jacket, the said passages being isolated from the cylinder A, so as to allow water to flow between the cylinder and passages, and cylinder-heads having discharge and suction chests b b, communicating with the ends of the passages g f, substantially as herein described.

3. The combination of the horizontal cylinder A and the surrounding jacket A, connected only at their ends, the jacket being prolonged upward on each side of and above the cylinder,and constructed with a dischargepassage, 9, having its ends 9 presented at the ends of the jacket, and an outlet-opening, 9 between the ends of the jacket, the said passage being isolated from the cylinder A, so as to allow water to flow between the cylinder and passage, an inlet-opening, e, in the bottom of the jacket A, an overflow or outlet opening, 6, in the walls of vthe jacket above said passage 9, and cylinder-heads having discharge-chests b, communicating with the ends of the passage g, substantially as herein described.

WM. H. WORTHEN. Witnesses W. R. LYNoH, MATTHEW PoLLooK. 

